Teenage Mutant Ninja Turtles

Yes, our favorite pizza-loving crime fighters make an appearance in this week's roundup. Plus: New offerings for social networking and dinner-planning.

LinkedIn

I’ve always thought this was the social network that pestered me with messages about people I don’t know, but apparently LinkedIn also helps people make connections with other people in their profession. Who knew! The latest update to the universal iOS app is most notable on the iPhone, which has been redesigned with a customizable interface, offering the ability to more easily find new people and share content.

Osito

Still waiting for Google Now to jump from Android to iOS? Osito, a free offering for iPhone, might be the next best thing for Apple-loving commuters. It draws on info like your location, calendar, email, and daily routine to make helpful suggestions—such as letting you know if there’s a traffic jam on your usual route home.

Relish Supper Club Menus Recipe Edition

This $2 iPad app from the editors of Relish Magazine is a brief guide for foodie wannabes, offering 12 menus—appropriate for “every season and scenario”—for entertaining. Pictures and recipes help you make your friends think you’re Martha Stewart.

Skitch

The Skitch app for iPhone and iPad already lets users mark and annotate pictures, maps, and other images. The latest update (also available in the app’s Mac version) adds the ability to annotate and share PDFs, and can create a summary of those annotations to share with other users viewing the same document. New stamps also help users offer feedback on documents, letting them to approve, reject, or highlight details. It’s an update that may give PDF readers like GoodReader a run for their money.

Teenage Mutant Ninja Turtles: Rooftop Run

Some ideas are so simple that all you have to do is offer a title, and everything is understood. Thus: Teenage Mutant Ninja Turtles: Rooftop Run for iPhone and iPad. The $2 game offers plenty of in-app purchase opportunities in order to gain access to all the content in the app, though, so beware.

Touchfit

The $7 Touchfit: GSP offers more than 500 video exercises taught by MMA champ Georges St-Pierre. He just wants to pump (clap) you up with exercises involving minimal equipment.

Triage: Email First Aid

The $2 Triage app helps you wade through your inbox quickly, showing your messages as a stack of cards: Swipe up to archive, or swipe down to deal with it later. Easy! The app supports Gmail, Yahoo! Mail, and iCloud Mail, as well as any mail provider that supports IMAP.

Yahoo Weather

Remember six months ago, when everybody else was coming up with really beautiful, elegant, simple weather apps the iPhone? Now Yahoo has one too.